The ksmbd server through 3.4.2, as used in the Linux kernel through 5.15.8, sometimes communicates in cleartext even though encryption has been enabled. This occurs because it sets the SMB2_GLOBAL_CAP_ENCRYPTION flag when using the SMB 3.1.1 protocol, which is a violation of the SMB protocol specification. When Windows 10 detects this protocol violation, it disables encryption.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-12-16T04:37:02

Updated: 2024-08-04T04:32:13.649Z

Reserved: 2021-12-16T00:00:00

Link: CVE-2021-45100

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-12-16T05:15:08.827

Modified: 2022-03-29T16:28:45.323

Link: CVE-2021-45100

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-12-14T00:00:00Z

Links: CVE-2021-45100 - Bugzilla